petersen



H. PETERSEN.

MOLD.

1,342,595. Patent-mun@ s, 1920.

. 2 SHEETS-SHEET l- H. PETERSEN.

MOLD.

Patented .111116 8, 1920.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

HANS PETERSEN, 0F DAVENPORT, IOWA, ASSIGNOR TO THE LINOGRAPI-I COMPANY, OF DAVENPORT, IOWA, A CORPORATION.

MOLD.

Specification of lLetters Patent.

Patented June s, 1920.

Application filed September 9, 1916. Serial No. 119,226.

To all whom it may concern:

Be it known that I, HANS PETERSEN, a citizen of the United States, residing at Davenport, in the county ofScott and State of Iowa, have invented certain new useful Improvements in Molds, of whichv the following is a specication.

The invention relates to improvements 1n molds for casting linotypes or slugs.

The invention more particularly relates to that class of devices in which a series of recessed matrices impressed with the letters of the alphabet or other printing characters are assembled Side by side so as to -form a line and positioned in front of an open ended mold cavity having its rear portion in allinement with the discharge mouth of a Crucible. In carrying out the invention the matrices are provided with relatively deep recesses as distinguished from shallow recesses which have heretofore been used, and when the molten metal is ejected from the Crucible the same fills the mold cavity as well as the deep recesses in the matrices and is then allowed to harden to produce a slug in which the overhang or character carrying portion is of a substantial width and very strong.

It is a further object of the invention to provide an apparatus for casting slugs of this style in which the relatively wide overhanging portions carrying the printing characters are of suilicient strength to withstand all strain placed thereon without the use of auxiliary supporting blanks or the like and to further provide a structure in which the various mold elements including the'matrices may be used for casting various sized type'without an adjustment of the mold parts, it. being understood that the slug after leaving the mold is then trimmed to any desired size by a trimming mechanism of any conventional type.

More specifically the invention comprehends the provision of a casting mold having arranged in one part thereof deep grooves for casting spacing ribs upon the body of the slug of a width equal to or greater Vthan the overhang which is' cast within the recesses in the matrices. The mold also contains additional grooves or channels at its outer portion receiving the molten metal fed thereto and forming webs on the slug beneath the overhanging portion thelcOf extending outwardly to a point metal forming the ribs on the shank of the slug and serving to terminate the channels abruptly shortv of the end of the mold so that the ribs will terminate short of the bottom of the slug, and when the slug is passed between the pair of trimming knives no projections or fins extend beyond the rear edge thereof to cause an uneven seating of the slugs. The use of the lining plate in connection with the mold also permits the Crucible to have a relatively narrow mouth piece, and it is particularly desirable when casting a slug that the mouth piece be narrow in view of the fact that hardening or congealing of the molten metal from the previous cast will not very likely occur, and manifestly, if this metal should congeal during contact with the conducting parts, the operation of the device would be seriously hampered.

In the accompanying drawings I have illustrated the preferred embodiment of my invention, but it will be understood that many changes can be made without departing from the spirit thereof.

In the drawings,

Figure l is a sectional view illustrating my invention.

Fig. 2 is a section on line 2 2 of Fig. 1 looking in the direction of the arrows.

Figs. 3 and are detail sectional views.

Fig. 5 is a sectional view similar to Fig, 2 but of a modification.

Figs. 6 and 7 are details of the slug; and

Figs. 8 and 9 are detail views of a modified form.

Referring now more particul/arly to the drawings wherein like reference characters indicate coresponding parts, the numeral 1 designates the throat of the Crucible which is broken away for the purpose of illustra-v tion and has a relatively narrow mouthpiece 2, at its outer end in alinement Ywith the mold cavity 3, the construction of the mold approved type having an opening inteimediate its ends, the walls of which support the mold, consisting of a lower body part 5, fastened to the cari-'ier by cross bolts 5 5', while the upper or mold cap portion 7 is secured in position to the body in any desired manner, preferably by fastening bolts. The body portion of the mold is spaced from the cap a substantial distance to provide the mold cavity 3 for the reception of the molten metal ejected from the cruoible, ,which metal when the same becomes hardeiied within the cavity forms theV shank of `the slug,

Alined against the forward end of the mold by means of interitting tongue portions 8 or any other convenient means are the recessed matrices 9, havingvcutout portions 10, therein casting the overhang of the slug,

the recesses also being impressed with letters of the alphabet or other characters `forming the printing type of the slug. It will be seen that the cutout portions of the matrices may be of any width desired and project at right angles a substantial. distancebeyond the mold cavityreceiving the molten metal from kthe Crucible, and as the metal is passed into the mold cavity the saine passes on to therecesses in the matrices, so that when the metal has becomehardened, a slug V12 is produced which will'be of the overhang type with the overhang supported by ribs cast on the slug. lt is particularly desii'able to recess the matrices instead of recessing the outer portions of the mold in view of the fact that` the same mold may be used for casting a variety of sized type provided. The slug is cast with ribs strong enough and 'frequent enough to support the overhang or 40 character carrying portion sufficiently to withstand the printing pressure to which they are subjected. j

It has long been the custom when using slugs of the over-hanging style to place a blank adjacent the shank of Vthe slug to provide suitable supporting means for the over-hanging character carrying partthereof., This has been one of the main objections to this type of slug andto theend that the overhanging portion thereof be -rigidly. supported without the use of auxiliary supporting blanks, the mold cap 'has arranged therein a `plurality of .deep grooves 1l of a width greater .than or L equal to the width of the recesses in the matrices forca'sting spacing ribs upon the .Y

j fwi`dtli' than the spacingribs, it being under- ',stoodthatjtheslugs after passing from the `.mold are trimmed downto the desired size bythe-A trimming mechanism 11', which may be of any suitabletype. If the supporting it will not be possible to obtain so much variation in the-size of the slugs by simply trimming, on account of the gieatei'resistance to the trimming than will be the case if only the spacing ribs ai'e trimmed. The

cavities 12 in the mold are spaced at regular intervals and are of substantially triangular formation, receiving a molten metal when the same is ejected from the Crucible and forming on the slug a plurality of relatively small. supporting webs 12 which directly underlie the overhang. rfhe cavities 12 merge with vthe mold cavity 3 and may be of any formationdesired capable of producing the shank of the slug.

The spacing as well as the supporting ribs are spaced at regular intervals, and are, in actual practice spaced accordingly to standard printers measure of 4one em or one-half em pitch, and the linerterminates between the grooves as is the usual practice, permitting a flat liner to be used in adjusting the length of the mold cavity. lVhen a series of molds are used with body cavities of the saine dimensions with grooves for Casting ribs of varying height the same series of liners may be used in all the molds. On the contrary, if acontinuous recess in the mold is. used, as is the lpractice at the presenttime, the recess must be of different width in aseries of molds' for casting different sizes of slugs, and liners are not interchangeable inthe differentmolds, nor can a flat linerbe used at all.

Attached to the inner face of the mold cap 7 and projecting a slight distance within the favity 3, or flush with the edge of mold cavity is a lining plate 1 3y which prevents the forming of the spacing ribs upon the base of the slug, as this plate closes the channels i 11 within the mold cap abruptly short of the bottom, and therefore, when the slug has been passed between the trimmingknives if any projecting fins should be forced toward its bottom the same would not -extend a sufficient distance so as to causeannneven seating of the slug when the same isassembled 'with other slugs. While I preferably use the lining plate forthis-purpose it will be clearly understood thatianyv suitable means for accomplishing this end ca n` be used Without .departing from theinvention. The use of the lining` plate 13 'also permits the utilizing oi' theielatively narrow` mouthpiece 2,

vandv this isparticularly desirable in view of the fact that it is necessary tokeep the type metal `of such a temperaturethat it will not become solid in the spruc holes ofthe mouthpiece when the metal forming 'the slug :Ts

separated therefroim-sothat small particles A of `metal will not adheretor harden on the mouthpiece because the surfaces of 'the j mouthpiece coming incontact with the .mold I are comparatively smallandnarrow fribsarethe same Vheight as the spacing ribs .i Inlig' I haveiillustrated several forms A of slugs that can be cast Within the mold embodying my invention, it being noted that the slugs may be cast with both the spacing ribs and supporting Webs thereon or only the spacing ribs.

lVhile l have described and illustrated the preferred embodiment of my invention it will of course be understood that many changes in size, arrangement and combination of parts may be made Without departing from the spirit of the appended claims.

Having thus described the invention What I claim is:

l. A linotype mold having a cavity to form the body of a slug, and said mold being provided With grooves for forming spacing ribs on the body of the slug and also with grooves for forming character supporting ribs on the body of the slug of less height than the spacing ribs.

2. A linotype mold for producing a slug with a character-carrying overhanging portion, said mold being also provided With grooves for forming spacing ribs on the slug, and also with grooves of less depth than the first mentioned grooves for forming supporting ribs for said overhanging portion.

3. A linotype mold having a cavity to form the body of a slug, and said mold being provided with relatively deep grooves for forming spacing ribs on the slug, and also with grooves therein at one side thereof of less depth and of less length than the first mentioned grooves for forming character supporting ribs on the slug.

4. A slug of the character described having a body portion and an overhanging portion at one side thereof, relatively short supporting ribs for said overhanging portion extending from the body at one sido of the overhanging portion of the slug, said sun porting ribs being of less height than the height of said overhanging portion of the slug, and a plurality of spacing ribs on the body portion of greater height than said overhanging portion of the slug.

5. In an apparatus of the character described the combination with matrices provided With recesses to form an over-hanging portion of a slug, of a mold having a cavity of less depth than the depth of the recesses in the matrices to form the body of a slug, the mold being also provided with grooves for forming supporting ribs for the overhanging portion of the slug of a height less than the height of said overhanging por tion, and the mold also having grooves oi greater depth than the first mentioned grooves for forming spacing ribs on the slug of a height greater than the overhanging portion of the slug.

In testimony whereof I aiiix my signature in the presence of tivo Witnesses.

' HANS PETERSEN. Witnesses:

LoUIs E. RODDEWIG, MARIE E. EGGERS. 

